One was revenge on me for doing it first, it was terrible and I wasn't expecting it.

More recently my girlfriend wanted to try it, so I let her, and I was prepared, and she wasn't knuckle deep in right away, and it actually felt pretty good. And 2, while you're jerking off it actually makes it feel amazing.

Well honestly, being taken by surprise and having that first girl's whole finger in my ass before I knew what was happennign was horrifying. Have you ever picked a cat up by the scruff of it's neck? That's what I was until she took it out.